With daring and ingenuity, Phileas Fogg has earned the respect and friendship of the enigmatic Captain Nemo and completed his search for Professor Aronnax. But an almost unbelievable discovery keeps him on board the submarine Nautilus: at the bottom of the sea, the crew comes across the remains of the legendary city of Atlantis. Together with Nemo and Aronnax, Phileas Fogg ventures into the ruins, where sunken treasures, enchanted palaces and unspeakable horrors await the adventurers. But the greatest danger is brewing on board the Nautilus: Is there really a traitor hiding there?